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NON-PRODUCTIVE TIME - NPT AS A SELECTING CRITERION OF BOTTOM HOLE ASSEMBLY - BHA
Abstract
The right selections of BHA, (bottom hole assembly), provides to minimize cost of drilling through the elimination of fishing works, which could took place during drilling. In many cases during drilling operations there is need to maintain the continuity of pure drilling works in the wellbore through fishing works. The name of the time for these works, it is known as NPT ? nonproductive time. Before drilling the borehole, the engineers must took into account all geological properties and affordable technological solutions which has got an impact into the drilling program. It gave them possibility to minimize risk during drilling, primarily arise from wrong BHA composition and eliminate NPT. And there is the big question of, how did the engineers prepare good bottom hole assembly? They must consider which kind of drilling works will took place in the wellsite. All those works are different e.g. drilling, milling, fishing, etc. In each case, the most suitable solution for bottom hole assembly must always be chosen.
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References6
Dubiel St., Ziaja J., Decyzje w zakresie rozpoznawania i likwidacji przychwyceń przewodu wiertniczego w otworach naftowych, Wiertnictwo, Nafta, Gaz, vol 25, issue 2, Poland, 1999.
Mitchell R.F., Miska S.Z., Fundamentals of Drilling Engineering, SPE Book, vol 12, vol. 3, USA, 2011.
Toczek P., Wisniowski R., Minimizing the Impact of Drilling on the Natural environment by Using TSE – a New Indicator of Drilling Efficiency, International Multidisciplinary Scientific GeoConference SGEM, Vienna, Austria, vol. 17, 27-29 November 2017.
Toczek P., Wisniowski R., Minimizing Bottomhole Pressure Losses Using TSE – Total Specific Energy – a New Indicator of Drilling Efficiency, International Multidisciplinary Scientific GeoConference SGEM, Albena, Bulgaria, vol.18, 2-8 July 2018.
Schofield T.R., Whelehan O.P., Baruya A., A New Fishing Equation, International Meeting on Petroleum Engineering, Beijing, China, SPE-22380-MS, 24-27 March 1992.
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